View the current Ordinance and Exhibit A (Amendments) on the Council Documents page.
Public comment drafts
- Low Emission Diesel (LED) Study: Biodiesel and Renewable Diesel Emissions in Legacy and New Technology Diesel Engines
- Research Summary: Prospects for Renewable, Low-carbon Fuels in Portland
- Report on Respirable Pollutants Emitted by Heavy Duty Diesel Engines Using Biodiesel and Renewable Diesel
- Economic State and Prospects of Renewable Diesel and Biodiesel in Greater Portland
- City of Portland RFS Emissions Impact Analysis – 9-28-2022